Ah, you saw it too! But it seemed like most people don't know who L is, right? So we must—my other and your other, they must have been close.

[Misa takes a moment to pause and then smile as it occurs to her that he called her pretty. He might have also implied that she (or her other) is vain, but still.]

Maybe... a skeletal deformity sounds like a pretty big deal though! I hope she didn't have anything like that. I wouldn't want to change too much.